We went to the power station to have a look around and find out what happens there. We see the depot at the edge of the Peedie Sea every day but most of us had never been inside.
It was amazing to think that not long ago the station had employed about 30 people and the huge 7000 horsepower engines had supplied power to Orkney. Now it is used if there is a need for an emergency back up, but the engines have to be run every month, to make sure they are working well.
These days we use much more electricity and our power now comes from the national grid which Orkney is conected to by a cable running across the Pentland Firth on the sea bed. You can see a picture of undersea power cable at the end of the slide show.
We found out why the depot is next to The Peedie Sea and saw where the fuel is pumped into the tanks from the harbour. Now we know why the location of the power station is so important.
While we there there we saw men training to be able to fix faults on the line. They were all wearing special safety equipment. We found out how insulators and conductors are used in pylons and power lines and poles - and why birds can sit on the lines and not get hurt!
Jack's dad made sure we understood how dangerous electricity could be and how to keep safe and what to do (and not do!) in an emergency.
Many thanks to Jack's dad for organising our trip for us.